Why is this important?
This event is unprecedented. The sudden brightening of the galaxy can be caused by various phenomena. However, such flares only last a few tens or a few hundred days at most. The galaxy in question shines brighter to this day – for more than four years since the beginning of the observed changes. Furthermore, the flares are unlike anything observed before.
Scientists noticed that the galaxy emits a much greater amount of ultraviolet, visible and infrared radiation, and since February of this year it has also been emitting X-rays.
What did the expert say?
– Imagine that you observed a distant galaxy for years and it always seemed quiet and inactive – says Professor Hans. Paola Sanchez Saez of the European Southern Observatory (ESO) in Chile. – Suddenly, at its center, there are dramatic changes in brightness unlike anything we’ve seen before.
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